commit 538012c8a30230065d1bfe09892279dd8b89193f
Author: Ján Tomko <jtomko@redhat.com>
Date:   Wed May 11 12:39:52 2016 +0200

    Fill out default vram in DeviceDefPostParse
    
    Move filling out the default video (v)ram to DeviceDefPostParse.
    
    This means it can be removed from virDomainVideoDefParseXML
    and qemuParseCommandLine. Also, we no longer need to special case
    VIR_DOMAIN_VIRT_XEN, since the per-driver callback gets called
    before the generic one.

Index: libvirt-1.3.4/src/conf/domain_conf.c
===================================================================
--- libvirt-1.3.4.orig/src/conf/domain_conf.c
+++ libvirt-1.3.4/src/conf/domain_conf.c
@@ -4155,6 +4155,12 @@ virDomainDeviceDefPostParseInternal(virD
 
     if (dev->type == VIR_DOMAIN_DEVICE_VIDEO) {
         virDomainVideoDefPtr video = dev->data.video;
+        /* Fill out (V)RAM if the driver-specific callback did not do so */
+        if (video->ram == 0 && video->type == VIR_DOMAIN_VIDEO_TYPE_QXL)
+            video->ram = virDomainVideoDefaultRAM(def, video->type);
+        if (video->vram == 0)
+            video->vram = virDomainVideoDefaultRAM(def, video->type);
+
         video->ram = VIR_ROUND_UP_POWER_OF_TWO(video->ram);
         video->vram = VIR_ROUND_UP_POWER_OF_TWO(video->vram);
     }
@@ -11970,10 +11976,6 @@ unsigned int
 virDomainVideoDefaultRAM(const virDomainDef *def,
                          const virDomainVideoType type)
 {
-    /* Defer setting default vram to the Xen drivers */
-    if (def->virtType == VIR_DOMAIN_VIRT_XEN)
-        return 0;
-
     switch (type) {
     case VIR_DOMAIN_VIDEO_TYPE_VGA:
     case VIR_DOMAIN_VIDEO_TYPE_CIRRUS:
@@ -12152,8 +12154,6 @@ virDomainVideoDefParseXML(xmlNodePtr nod
                            _("cannot parse video ram '%s'"), ram);
             goto error;
         }
-    } else if (def->type == VIR_DOMAIN_VIDEO_TYPE_QXL) {
-        def->ram = virDomainVideoDefaultRAM(dom, def->type);
     }
 
     if (vram) {
@@ -12162,8 +12162,6 @@ virDomainVideoDefParseXML(xmlNodePtr nod
                            _("cannot parse video vram '%s'"), vram);
             goto error;
         }
-    } else {
-        def->vram = virDomainVideoDefaultRAM(dom, def->type);
     }
 
     if (vram64) {
@@ -18612,7 +18610,6 @@ virDomainDefAddImplicitVideo(virDomainDe
                        _("cannot determine default video type"));
         goto cleanup;
     }
-    video->vram = virDomainVideoDefaultRAM(def, video->type);
     video->heads = 1;
     if (VIR_APPEND_ELEMENT(def->videos, def->nvideos, video) < 0)
         goto cleanup;
Index: libvirt-1.3.4/src/qemu/qemu_parse_command.c
===================================================================
--- libvirt-1.3.4.orig/src/qemu/qemu_parse_command.c
+++ libvirt-1.3.4/src/qemu/qemu_parse_command.c
@@ -2585,9 +2585,7 @@ qemuParseCommandLine(virCapsPtr caps,
             vid->type = VIR_DOMAIN_VIDEO_TYPE_XEN;
         else
             vid->type = video;
-        vid->vram = virDomainVideoDefaultRAM(def, vid->type);
         if (vid->type == VIR_DOMAIN_VIDEO_TYPE_QXL) {
-            vid->ram = virDomainVideoDefaultRAM(def, vid->type);
             vid->vgamem = QEMU_QXL_VGAMEM_DEFAULT;
         } else {
             vid->ram = 0;